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Marketable Securities | 12 Months Ended
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Dec. 31, 2012
Marketable Securities | 4. Marketable Securities The Company’s marketable securities consist of both trading (including securities held by a broker-dealer affiliate) and available-for-sale securities. The composition of the Company’s marketable securities is summarized as follows:
December 31, 2012 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Cost |  |  | Unrealized Loss |  |  | Unrealized Gain |  |  | Fair Value |
($ in thousands) |  |  |  |  |  |  |  |  |  |  |  |
Trading: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sponsored mutual funds and variable insurance funds |  | $ | 7,312 |  |  | $ | (689 | ) |  | $ | 1,390 |  |  | $ | 8,013 |
Investments of consolidated sponsored investment products |  |  | 41,367 |  |  |  | (165 | ) |  |  | 2,025 |  |  |  | 43,227 |
Equity securities |  |  | 3,739 |  |  |  | — |  |  |  | 640 |  |  |  | 4,379 |
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sponsored closed-end funds |  |  | 2,619 |  |  |  | (37 | ) |  |  | 74 |  |  |  | 2,656 |
Total marketable securities |  | $ | 55,037 |  |  | $ | (891 | ) |  | $ | 4,129 |  |  | $ | 58,275 |
December 31, 2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Cost |  |  | Unrealized Loss |  |  | Unrealized Gain |  |  | Fair Value |
($ in thousands) |  |  |  |  |  |  |  |  |  |  |  |
Trading: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sponsored mutual funds and variable insurance funds |  | $ | 9,195 |  |  | $ | (1,263 | ) |  | $ | 1,048 |  |  | $ | 8,980 |
Equity securities |  |  | 3,434 |  |  |  | (3 | ) |  |  | 115 |  |  |  | 3,546 |
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sponsored closed-end funds |  |  | 2,240 |  |  |  | (38 | ) |  |  | 267 |  |  |  | 2,469 |
Total marketable securities |  | $ | 14,869 |  |  | $ | (1,304 | ) |  | $ | 1,430 |  |  | $ | 14,995

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- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27232-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2,12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26626-111562 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27161-111563 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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